Thomas william stainer htjtchins



T. w. s. HUTCHINS.

MANUFACTURE OF LAMPBLACK.

APPLICATION FILED OCT. I6, 1918.

1,309,670. I Patented July 8, 1919.

ATTORNEY UNITED s'rATEs PATENT OFFICE.

. s, l THOMAS WILLIAM STAINER HUTCHINS, OEMIDDLEWIGH, ENGLAND.

MANUFACTURE OF LAMIBLAGK.

Specification of Letters Patent. v Patented July 8, 19 19.

Application filed. October 16, 1918; Serial No.1 258,452. I

1 county of Chester, England, a subject of the King of Great Britain and Ireland, have invented certain new and useful Improvements in the Manufacture of Lampblack, of which the following is a specification.

. This invention has for its object to provide new or improved means for use in the manufacture of lampblack by subjecting tar or oil to sudden intense heat, the said means permitting of the ready collection of the lampblack formed and recovery of the gases produced during the heating of the tar or oil. Y

The invention comprises essentiallythe combination with a trough or vessel contaming the tar or oil to be treated, of a disk adapted to be rotated and so disposed that in its rotation it carries on its periphery a film of the tar" or oil picked up from the aforesaid trough or vessel and means for subjecting such film upon the disk. to the intense heat of one or more electric arcs, whereby lampblack is produced.

My invention further comprises the arrangement wherein the disk itself-forms one of the arc electrodes.

My invention further comprises the details hereinafter described for blowing orconcentrating the are upon the disk, for collecting the lampblack and for recovering the permanent gases produced during the process.

Referring to the accompanying sheet of explanatory diagrams Figure 1 is a side elevation and Fig. 2 an end elevation representing one simple form of the apparatus as constructed in accordance with this invention; Fig. 3 is a side elevation and Fig. 4 a plan representing another form.

Fig. 5 is an elevation representing a form of the apparatus as provided with means for collecting the lampblack and also for recovering the permanent gases produced during the process.

The same reference letters in'the dihfer'ent views indicate the same or similar parts.

tar or 011 "the combination with a vessel con-- In one convenient application of myiinof carbon or graphite andwhich dips into a -bath b of tar or oil, so that as the disk rotates, -a film of the tar'or oil .isj carried around upon and near the periphery of the disk. At a point adjacent said periphery and preferably at right angles to the axis of rotation of the disk, I provide a carbon rod-0 through which-an-electric current is passed so as to form an are between the rod and disk, the return current from the.

latter passing out of the apparatus by way of the brush or contact (1. The film of tar or oil is thus brought rapidly into the intensely hot zone of the arc and becomes convertedinto lampblack with the evolution of as. i

Instead of making the ,disk or wheela of carbon or graphite, it may be made of a vitreous or other mater1al,'thearc being then formed between two carbon rods 0, 0.

so adjusted that the arc is projected forward onto the periphery of-the disk. Or I may employ a magnet as e in the known manner for blowing or projecting the arc V I in the desired directi' n, such magnet being coupled in series wit the poles c, c of the,

are as shown in Fig. 4.

In order to collect the lampblackand gas,

I inclose the apparatus in'an air-tight casing or housing and prov'de for the circulation of the gas through he latter by means of a fan 9 or the like, which draws the lampblack and gas through a pipe h and returns the gas or a portion thereof to the said casing. The lampblack is separated from the gas by a bag or like filter i. The excess of gas beyond the volume or ca acity of the casing is tapped or drawn oii either continuously or at intervals through a valve or connectionj and so recovered.

A gas holder or balancer as 71; is arranged in a holder Z containing liquid to form a seal. With my improved means, the tar or oil is brought while in the form of a thin film, suddenly into the intensely hot zone of the electric arc, resulting in a high yield of corlpiparatively pure lampblack.

aving now described my invention what I claim asv new and desire to secure. by Letters Patent is z 1. In themanufacture of lampblack from taining' the said liquid, of means for picking the li uidfrom the said vessel in a film omn, an an electric arc projected on to said film carrying means and subjecting said film to the heat of the arc, as set forth.

2. In the manufacture of lampblack from tar or oil,-the combination with a vessel containing the said liquid, of a rotatable disk picking up the liquid from the said vessel in a film form, and an electric are projected on to the disk and subjecting said film to the heat of the are, as set forth.

3. In the manufacture of lampblack from tar or oil, the combination with a Vessel containing the said liquid, of a rotatable disk picking up the liquid from the said vessel in a film form, an electric arc, and

means for projecting the arc onto the disk, as set forth. a

4, In the manufacture of lampblack'from tar or oil, the combination consisting of a vessel containing the saidliquid, a rotatable disk picking up the liquid from the said vessel in a film form, an electric are projected on to the disk and subjecting said film to the heat of the arc and means for separating and collecting the resulting lampblack and gases, as set forth.

In testimony whereof I have signed my name to this specification. J

THOMAS WILLIAM STAINER HUTCHINS. 

